Amoeba Server (Linux): 192.168.14.129
Mysql 1 Server (Linux): 192.168.14.131
Mysql 2 Server (Linux): 192.168.14.133
Clients
Mysql GUI Tools (Windows): 192.168.14.28
Java Programs (Eclipse): 192.168.14.28
假设以上程序都已经安装好了。
1. Mysql数据库远程访问授权
mysql 1 server 和 mysql 2 server 的 test 数据库,允许 amoeba server 访问。用户名:test_user 密码:1234
2. 创建测试表
在 mysql 1 server 中:
t_user:
- mysql> create table test.t_user (
- -> user_id integer unsigned not null,
- -> user_name varchar(45),
- -> user_address varchar(100),
- -> primary key (user_id)
- -> )engine=innodb;
- Query OK, 0 rows affected (0.01 sec)
t_blog:
- mysql> create table test.t_blog (
- -> blog_id integer unsigned not null,
- -> blog_title varchar(45),
- -> blog_content text,
- -> user_id integer,
- -> primary key (blog_id)
- -> )engine=innodb;
- Query OK, 0 rows affected (0.00 sec)
t_message:
- mysql> create table test.t_message (
- -> message_id integer unsigned not null,
- -> message_content varchar(255),
- -> user_id integer
- -> )engine=innodb;
- Query OK, 0 rows affected (0.01 sec)
在 mysql 2 server 中
t_user 同上。
t_attention:
- mysql> create table test.t_attention (
- -> attention_id integer unsigned not null,
- -> user_id integer,
- -> blog_id integer
- -> )engine=innodb;
- Query OK, 0 rows affected (0.01 sec)
t_blog_comment:
- mysql> create table test.t_blog_comment (
- -> comment_id integer unsigned not null,
- -> commnet_content text,
- -> blog_id integer
- -> )engine=innodb;
- Query OK, 0 rows affected (0.01 sec)
3. 配置 Amoeba 的切分数据库的规则
Amoeba 的详细使用说明请参见:http://docs.hexnova.com/amoeba/
dbServers.xml
- xml version="1.0" encoding="gbk"?>
-
- >
- <amoeba:dbServers xmlns:amoeba="http://amoeba.meidusa.com/">
-
-
- <property name="port">3306property>
-
-
- <property name="schema">testproperty>
-
-
- <property name="user">test_userproperty>
-
-
- <property name="password">1234property>
-
- factoryConfig>
-
- <poolConfig class="com.meidusa.amoeba.net.poolable.PoolableObjectPool">
- <property name="maxActive">500property>
- <property name="maxIdle">500property>
- <property name="minIdle">10property>
- <property name="minEvictableIdleTimeMillis">600000property>
- <property name="timeBetweenEvictionRunsMillis">600000property>
- <property name="testOnBorrow">trueproperty>
- <property name="testWhileIdle">trueproperty>
- poolConfig>
- dbServer>
-
- <dbServer name="server1" parent="abstractServer">
- <factoryConfig>
-
- <property name="ipAddress">192.168.14.131property>
- factoryConfig>
- dbServer>
-
- <dbServer name="server2" parent="abstractServer">
- <factoryConfig>
-
- <property name="ipAddress">192.168.14.133property>
- factoryConfig>
- dbServer>
-
- amoeba:dbServers>
amoeba.xml


可以发现,在GUI 工具中,能看到的表 只有在 server1 中,创建的表。 上面已经说明了,因为 server1 中主数据库。
验证垂直切分的 t_attention 表
为了验证,垂直切分出去的 t_attention 表。 直接执行 select * from test.t_attention;

可以看到,查询成功。 说明的确可以访问,切分出去的 t_attention 表。
验证水平切分的 t_user 表
t_user 的水平切分规则是 根据 user_id 的奇偶性进行切分。

上图的左下角可以看到:2 rows affected by the last command , 说明刚才那个插入语句,作用到了两条记录
查询看一下插入结果:

发现有两条一样的数据。到网上找了一下原因。
后来知道 amoeba 是根据 sql 解析来进行 水平切分的, 需要把切分的关键字段(这里是user_id),加入到 sql 中。否则 切分规则无效。无效后,会在 server1, server2 均都插入数据。
即变为:insert into t_user(user_id, user_name, user_address) values(1, 'n1', 'a1')
分别检查一下,两个数据库


两个数据库均插入了一条相同的数据。 同时也了解到,amoeba 的查询会将水平切分的表在两个数据库的结果合并。
修改 sql 语句后再执行一次。

可以看到左下角:只作用到一条记录
看下查询结果



因为 user_id 为 偶数, 所有分派到 server 1 了。
水平切分的排序与分页

排序结果:分别查询的 server1 和 server2 然后简单合并。 所以 排序不正确。

分页结果:同样是分别执行的 server1 和 server2 然后合并。 每个 server 取两条记录,记录也变为了 4 条。分页不正确
验证连接查询
在 t_message , t_blog, t_attention 表分别插入两个数据

分别执行以上查询语句。
发现只有 第二 和 第四 可以执行成功。
结果:
1. 如果 表1 被水平分片,连接查询时,需要连接的表,在 表1 分片的所有数据库中均存在(即相同的分片规则),才可以连接查询。
2. 如果 表1 被垂直分片,连接查询时,需要连接的表也同样分片到同一个数据库中(即相同的分片规则)。
3. 综上,只有在连接的表,在同一个数据库中均存在时,才能连接操作。即 不支持跨数据库的连接。
验证事务管理
使用程序验证。
1. 验证没有分片的表的事务操作(无回滚)。
程序片段:
- package prx.dao;
-
- import java.util.List;
- import java.util.Map;
-
- import prx.core.string.StringUtil;
- import prx.dao.core.IPrxDao;
- import prx.dao.core.impl.MySqlDao;
-
- public class Test {
-
- public static void main(String[] args) throws Exception {
- IPrxDao dao = new MySqlDao();
-
-
- dao.startTransaction();
- for(int i=3; i<10; i++) {
- dao.executeUpdate("insert into t_message(message_id, message_content, user_id) values(?, ?, ?)", new Object[]{i, "c" + i, i});
- }
- dao.commitTransaction();
-
-
- List
-
- for(Map map : list) {
- System.out.println(StringUtil.valueOfMap(map));
- }
- }
- }
执行结果:
- 2011/08/12 10:17:33 [INFO] MLog clients using log4j logging.
- 2011/08/12 10:17:34 [INFO] Initializing c3p0-0.9.1.2 [built 21-May-2007 15:04:56; debug? true; trace: 10]
- 2011/08/12 10:17:34 [INFO] Initializing c3p0 pool... com.mchange.v2.c3p0.ComboPooledDataSource [ acquireIncrement -> 3, acquireRetryAttempts -> 30, acquireRetryDelay -> 1000, autoCommitOnClose -> false, automaticTestTable -> null, breakAfterAcquireFailure -> false, checkoutTimeout -> 0, connectionCustomizerClassName -> null, connectionTesterClassName -> com.mchange.v2.c3p0.impl.DefaultConnectionTester, dataSourceName -> 1hge3oc8h1g3olvycduja2|7a78d3, debugUnreturnedConnectionStackTraces -> false, description -> null, driverClass -> com.mysql.jdbc.Driver, factoryClassLocation -> null, forceIgnoreUnresolvedTransactions -> false, identityToken -> 1hge3oc8h1g3olvycduja2|7a78d3, idleConnectionTestPeriod -> 0, initialPoolSize -> 3, jdbcUrl -> jdbc:mysql://192.168.14.129:8066/test?autoReconnect=true&characterEncoding=UTF-8, maxAdministrativeTaskTime -> 0, maxConnectionAge -> 0, maxIdleTime -> 0, maxIdleTimeExcessConnections -> 0, maxPoolSize -> 15, maxStatements -> 0, maxStatementsPerConnection -> 0, minPoolSize -> 3, numHelperThreads -> 3, numThreadsAwaitingCheckoutDefaultUser -> 0, preferredTestQuery -> null, properties -> {user=******, password=******}, propertyCycle -> 0, testConnectionOnCheckin -> false, testConnectionOnCheckout -> false, unreturnedConnectionTimeout -> 0, usesTraditionalReflectiveProxies -> false ]
- 2011/08/12 10:17:36 [INFO] [开始事务]
- 2011/08/12 10:17:36 [INFO] insert into t_message(message_id, message_content, user_id) values(?, ?, ?)
- 2011/08/12 10:17:36 [INFO] values:[3,c3,3]
- 2011/08/12 10:17:36 [INFO] insert into t_message(message_id, message_content, user_id) values(?, ?, ?)
- 2011/08/12 10:17:36 [INFO] values:[4,c4,4]
- 2011/08/12 10:17:36 [INFO] insert into t_message(message_id, message_content, user_id) values(?, ?, ?)
- 2011/08/12 10:17:36 [INFO] values:[5,c5,5]
- 2011/08/12 10:17:36 [INFO] insert into t_message(message_id, message_content, user_id) values(?, ?, ?)
- 2011/08/12 10:17:36 [INFO] values:[6,c6,6]
- 2011/08/12 10:17:36 [INFO] insert into t_message(message_id, message_content, user_id) values(?, ?, ?)
- 2011/08/12 10:17:36 [INFO] values:[7,c7,7]
- 2011/08/12 10:17:36 [INFO] insert into t_message(message_id, message_content, user_id) values(?, ?, ?)
- 2011/08/12 10:17:36 [INFO] values:[8,c8,8]
- 2011/08/12 10:17:36 [INFO] insert into t_message(message_id, message_content, user_id) values(?, ?, ?)
- 2011/08/12 10:17:36 [INFO] values:[9,c9,9]
- 2011/08/12 10:17:36 [INFO] [事务提交]
- 2011/08/12 10:17:36 [INFO] select * from t_message
- [message_id:1, message_content:c1, user_id:1]
- [message_id:2, message_content:c2, user_id:2]
- [message_id:3, message_content:c3, user_id:3]
- [message_id:4, message_content:c4, user_id:4]
- [message_id:5, message_content:c5, user_id:5]
- [message_id:6, message_content:c6, user_id:6]
- [message_id:7, message_content:c7, user_id:7]
- [message_id:8, message_content:c8, user_id:8]
- [message_id:9, message_content:c9, user_id:9]
执行正确无误。
2. 验证没有分片的表的操作(有回滚)。
程序片段:
- public static void main(String[] args) throws Exception {
- IPrxDao dao = new MySqlDao();
-
-
- dao.startTransaction();
- for(int i=10; i<20; i++) {
- dao.executeUpdate("insert into t_message(message_id, message_content, user_id) values(?, ?, ?)", new Object[]{i, "c" + i, i});
- }
-
- dao.executeUpdate("insert into t_user(user_id) values(?)", new Object[]{1});
- dao.commitTransaction();
-
-
-
- List
-
- for(Map map : list) {
- System.out.println(StringUtil.valueOfMap(map));
- }
- }
执行结果:
- 2011/08/12 10:24:37 [INFO] MLog clients using log4j logging.
- 2011/08/12 10:24:37 [INFO] Initializing c3p0-0.9.1.2 [built 21-May-2007 15:04:56; debug? true; trace: 10]
- 2011/08/12 10:24:37 [INFO] Initializing c3p0 pool... com.mchange.v2.c3p0.ComboPooledDataSource [ acquireIncrement -> 3, acquireRetryAttempts -> 30, acquireRetryDelay -> 1000, autoCommitOnClose -> false, automaticTestTable -> null, breakAfterAcquireFailure -> false, checkoutTimeout -> 0, connectionCustomizerClassName -> null, connectionTesterClassName -> com.mchange.v2.c3p0.impl.DefaultConnectionTester, dataSourceName -> 1hge3oc8h1g3xpaud8zfzf|b169f8, debugUnreturnedConnectionStackTraces -> false, description -> null, driverClass -> com.mysql.jdbc.Driver, factoryClassLocation -> null, forceIgnoreUnresolvedTransactions -> false, identityToken -> 1hge3oc8h1g3xpaud8zfzf|b169f8, idleConnectionTestPeriod -> 0, initialPoolSize -> 3, jdbcUrl -> jdbc:mysql://192.168.14.129:8066/test?autoReconnect=true&characterEncoding=UTF-8, maxAdministrativeTaskTime -> 0, maxConnectionAge -> 0, maxIdleTime -> 0, maxIdleTimeExcessConnections -> 0, maxPoolSize -> 15, maxStatements -> 0, maxStatementsPerConnection -> 0, minPoolSize -> 3, numHelperThreads -> 3, numThreadsAwaitingCheckoutDefaultUser -> 0, preferredTestQuery -> null, properties -> {user=******, password=******}, propertyCycle -> 0, testConnectionOnCheckin -> false, testConnectionOnCheckout -> false, unreturnedConnectionTimeout -> 0, usesTraditionalReflectiveProxies -> false ]
- 2011/08/12 10:24:38 [INFO] [开始事务]
- 2011/08/12 10:24:38 [INFO] insert into t_message(message_id, message_content, user_id) values(?, ?, ?)
- 2011/08/12 10:24:38 [INFO] values:[10,c10,10]
- 2011/08/12 10:24:38 [INFO] insert into t_message(message_id, message_content, user_id) values(?, ?, ?)
- 2011/08/12 10:24:38 [INFO] values:[11,c11,11]
- 2011/08/12 10:24:38 [INFO] insert into t_message(message_id, message_content, user_id) values(?, ?, ?)
- 2011/08/12 10:24:38 [INFO] values:[12,c12,12]
- 2011/08/12 10:24:38 [INFO] insert into t_message(message_id, message_content, user_id) values(?, ?, ?)
- 2011/08/12 10:24:38 [INFO] values:[13,c13,13]
- 2011/08/12 10:24:38 [INFO] insert into t_message(message_id, message_content, user_id) values(?, ?, ?)
- 2011/08/12 10:24:38 [INFO] values:[14,c14,14]
- 2011/08/12 10:24:38 [INFO] insert into t_message(message_id, message_content, user_id) values(?, ?, ?)
- 2011/08/12 10:24:38 [INFO] values:[15,c15,15]
- 2011/08/12 10:24:38 [INFO] insert into t_message(message_id, message_content, user_id) values(?, ?, ?)
- 2011/08/12 10:24:38 [INFO] values:[16,c16,16]
- 2011/08/12 10:24:38 [INFO] insert into t_message(message_id, message_content, user_id) values(?, ?, ?)
- 2011/08/12 10:24:38 [INFO] values:[17,c17,17]
- 2011/08/12 10:24:38 [INFO] insert into t_message(message_id, message_content, user_id) values(?, ?, ?)
- 2011/08/12 10:24:38 [INFO] values:[18,c18,18]
- 2011/08/12 10:24:38 [INFO] insert into t_message(message_id, message_content, user_id) values(?, ?, ?)
- 2011/08/12 10:24:38 [INFO] values:[19,c19,19]
- 2011/08/12 10:24:38 [INFO] insert into t_user(user_id) values(?)
- 2011/08/12 10:24:38 [INFO] values:[1]
- 2011/08/12 10:24:38 [ERROR] Duplicate entry '1' for key 'PRIMARY'
- com.mysql.jdbc.exceptions.MySQLIntegrityConstraintViolationException: Duplicate entry '1' for key 'PRIMARY'
- at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:931)
- at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2870)
- at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1573)
- at com.mysql.jdbc.ServerPreparedStatement.serverExecute(ServerPreparedStatement.java:1169)
- at com.mysql.jdbc.ServerPreparedStatement.executeInternal(ServerPreparedStatement.java:693)
- at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:1404)
- at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:1318)
- at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:1303)
- at com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.executeUpdate(NewProxyPreparedStatement.java:105)
- at prx.dao.core.AbstractPrxDao.executeUpdate(AbstractPrxDao.java:215)
- at prx.dao.Test.main(Test.java:21)
- 2011/08/12 10:24:38 [ERROR] [事务失败,回滚]
- 2011/08/12 10:24:38 [INFO] select * from t_message
- [message_id:1, message_content:c1, user_id:1]
- [message_id:2, message_content:c2, user_id:2]
- [message_id:3, message_content:c3, user_id:3]
- [message_id:4, message_content:c4, user_id:4]
- [message_id:5, message_content:c5, user_id:5]
- [message_id:6, message_content:c6, user_id:6]
- [message_id:7, message_content:c7, user_id:7]
- [message_id:8, message_content:c8, user_id:8]
- [message_id:9, message_content:c9, user_id:9]
执行正确无误。
3. 验证垂直分片的表的事务(无回滚)
- public static void main(String[] args) throws Exception {
- IPrxDao dao = new MySqlDao();
-
-
- dao.startTransaction();
- for(int i=3; i<10; i++) {
- dao.executeUpdate("insert into t_attention(attention_id, user_id, blog_id) values(?, ?, ?)", new Object[]{i, i, i});
- }
-
-
- dao.commitTransaction();
-
-
-
- List
-
- for(Map map : list) {
- System.out.println(StringUtil.valueOfMap(map));
- }
- }
执行结果:
- 2011/08/12 10:30:49 [INFO] MLog clients using log4j logging.
- 2011/08/12 10:30:50 [INFO] Initializing c3p0-0.9.1.2 [built 21-May-2007 15:04:56; debug? true; trace: 10]
- 2011/08/12 10:30:50 [INFO] Initializing c3p0 pool... com.mchange.v2.c3p0.ComboPooledDataSource [ acquireIncrement -> 3, acquireRetryAttempts -> 30, acquireRetryDelay -> 1000, autoCommitOnClose -> false, automaticTestTable -> null, breakAfterAcquireFailure -> false, checkoutTimeout -> 0, connectionCustomizerClassName -> null, connectionTesterClassName -> com.mchange.v2.c3p0.impl.DefaultConnectionTester, dataSourceName -> 1hge3oc8h1g45oipe8gwx3|b169f8, debugUnreturnedConnectionStackTraces -> false, description -> null, driverClass -> com.mysql.jdbc.Driver, factoryClassLocation -> null, forceIgnoreUnresolvedTransactions -> false, identityToken -> 1hge3oc8h1g45oipe8gwx3|b169f8, idleConnectionTestPeriod -> 0, initialPoolSize -> 3, jdbcUrl -> jdbc:mysql://192.168.14.129:8066/test?autoReconnect=true&characterEncoding=UTF-8, maxAdministrativeTaskTime -> 0, maxConnectionAge -> 0, maxIdleTime -> 0, maxIdleTimeExcessConnections -> 0, maxPoolSize -> 15, maxStatements -> 0, maxStatementsPerConnection -> 0, minPoolSize -> 3, numHelperThreads -> 3, numThreadsAwaitingCheckoutDefaultUser -> 0, preferredTestQuery -> null, properties -> {user=******, password=******}, propertyCycle -> 0, testConnectionOnCheckin -> false, testConnectionOnCheckout -> false, unreturnedConnectionTimeout -> 0, usesTraditionalReflectiveProxies -> false ]
- 2011/08/12 10:30:50 [INFO] [开始事务]
- 2011/08/12 10:30:50 [INFO] insert into t_attention(attention_id, user_id, blog_id) values(?, ?, ?)
- 2011/08/12 10:30:50 [INFO] values:[3,3,3]
- 2011/08/12 10:30:50 [INFO] insert into t_attention(attention_id, user_id, blog_id) values(?, ?, ?)
- 2011/08/12 10:30:50 [INFO] values:[4,4,4]
- 2011/08/12 10:30:50 [INFO] insert into t_attention(attention_id, user_id, blog_id) values(?, ?, ?)
- 2011/08/12 10:30:50 [INFO] values:[5,5,5]
- 2011/08/12 10:30:50 [INFO] insert into t_attention(attention_id, user_id, blog_id) values(?, ?, ?)
- 2011/08/12 10:30:50 [INFO] values:[6,6,6]
- 2011/08/12 10:30:50 [INFO] insert into t_attention(attention_id, user_id, blog_id) values(?, ?, ?)
- 2011/08/12 10:30:50 [INFO] values:[7,7,7]
- 2011/08/12 10:30:50 [INFO] insert into t_attention(attention_id, user_id, blog_id) values(?, ?, ?)
- 2011/08/12 10:30:50 [INFO] values:[8,8,8]
- 2011/08/12 10:30:50 [INFO] insert into t_attention(attention_id, user_id, blog_id) values(?, ?, ?)
- 2011/08/12 10:30:50 [INFO] values:[9,9,9]
- 2011/08/12 10:30:50 [INFO] [事务提交]
- 2011/08/12 10:30:50 [INFO] select * from t_attention
- [attention_id:1, user_id:1, blog_id:1]
- [attention_id:2, user_id:2, blog_id:2]
- [attention_id:2, user_id:2, blog_id:2]
- [attention_id:3, user_id:3, blog_id:3]
- [attention_id:4, user_id:4, blog_id:4]
- [attention_id:5, user_id:5, blog_id:5]
- [attention_id:6, user_id:6, blog_id:6]
- [attention_id:7, user_id:7, blog_id:7]
- [attention_id:8, user_id:8, blog_id:8]
- [attention_id:9, user_id:9, blog_id:9]
执行成功。
4. 验证垂直分片的表(有回滚)
- public static void main(String[] args) throws Exception {
- IPrxDao dao = new MySqlDao();
-
-
- dao.startTransaction();
- for(int i=10; i<20; i++) {
- dao.executeUpdate("insert into t_attention(attention_id, user_id, blog_id) values(?, ?, ?)", new Object[]{i, i, i});
- }
-
- dao.executeUpdate("insert into t_user(user_id) values(?)", new Object[]{1});
- dao.commitTransaction();
-
-
-
- List
-
- for(Map map : list) {
- System.out.println(StringUtil.valueOfMap(map));
- }
- }
执行结果:
- 2011/08/12 10:32:46 [INFO] MLog clients using log4j logging.
- 2011/08/12 10:32:46 [INFO] Initializing c3p0-0.9.1.2 [built 21-May-2007 15:04:56; debug? true; trace: 10]
- 2011/08/12 10:32:46 [INFO] Initializing c3p0 pool... com.mchange.v2.c3p0.ComboPooledDataSource [ acquireIncrement -> 3, acquireRetryAttempts -> 30, acquireRetryDelay -> 1000, autoCommitOnClose -> false, automaticTestTable -> null, breakAfterAcquireFailure -> false, checkoutTimeout -> 0, connectionCustomizerClassName -> null, connectionTesterClassName -> com.mchange.v2.c3p0.impl.DefaultConnectionTester, dataSourceName -> 1hge3oc8h1g486lb1n4c9c4|b169f8, debugUnreturnedConnectionStackTraces -> false, description -> null, driverClass -> com.mysql.jdbc.Driver, factoryClassLocation -> null, forceIgnoreUnresolvedTransactions -> false, identityToken -> 1hge3oc8h1g486lb1n4c9c4|b169f8, idleConnectionTestPeriod -> 0, initialPoolSize -> 3, jdbcUrl -> jdbc:mysql://192.168.14.129:8066/test?autoReconnect=true&characterEncoding=UTF-8, maxAdministrativeTaskTime -> 0, maxConnectionAge -> 0, maxIdleTime -> 0, maxIdleTimeExcessConnections -> 0, maxPoolSize -> 15, maxStatements -> 0, maxStatementsPerConnection -> 0, minPoolSize -> 3, numHelperThreads -> 3, numThreadsAwaitingCheckoutDefaultUser -> 0, preferredTestQuery -> null, properties -> {user=******, password=******}, propertyCycle -> 0, testConnectionOnCheckin -> false, testConnectionOnCheckout -> false, unreturnedConnectionTimeout -> 0, usesTraditionalReflectiveProxies -> false ]
- 2011/08/12 10:32:47 [INFO] [开始事务]
- 2011/08/12 10:32:47 [INFO] insert into t_attention(attention_id, user_id, blog_id) values(?, ?, ?)
- 2011/08/12 10:32:47 [INFO] values:[10,10,10]
- 2011/08/12 10:32:47 [INFO] insert into t_attention(attention_id, user_id, blog_id) values(?, ?, ?)
- 2011/08/12 10:32:47 [INFO] values:[11,11,11]
- 2011/08/12 10:32:47 [INFO] insert into t_attention(attention_id, user_id, blog_id) values(?, ?, ?)
- 2011/08/12 10:32:47 [INFO] values:[12,12,12]
- 2011/08/12 10:32:47 [INFO] insert into t_attention(attention_id, user_id, blog_id) values(?, ?, ?)
- 2011/08/12 10:32:47 [INFO] values:[13,13,13]
- 2011/08/12 10:32:47 [INFO] insert into t_attention(attention_id, user_id, blog_id) values(?, ?, ?)
- 2011/08/12 10:32:47 [INFO] values:[14,14,14]
- 2011/08/12 10:32:47 [INFO] insert into t_attention(attention_id, user_id, blog_id) values(?, ?, ?)
- 2011/08/12 10:32:47 [INFO] values:[15,15,15]
- 2011/08/12 10:32:47 [INFO] insert into t_attention(attention_id, user_id, blog_id) values(?, ?, ?)
- 2011/08/12 10:32:47 [INFO] values:[16,16,16]
- 2011/08/12 10:32:47 [INFO] insert into t_attention(attention_id, user_id, blog_id) values(?, ?, ?)
- 2011/08/12 10:32:47 [INFO] values:[17,17,17]
- 2011/08/12 10:32:47 [INFO] insert into t_attention(attention_id, user_id, blog_id) values(?, ?, ?)
- 2011/08/12 10:32:47 [INFO] values:[18,18,18]
- 2011/08/12 10:32:47 [INFO] insert into t_attention(attention_id, user_id, blog_id) values(?, ?, ?)
- 2011/08/12 10:32:47 [INFO] values:[19,19,19]
- 2011/08/12 10:32:47 [INFO] insert into t_user(user_id) values(?)
- 2011/08/12 10:32:47 [INFO] values:[1]
- 2011/08/12 10:32:47 [ERROR] Duplicate entry '1' for key 'PRIMARY'
- com.mysql.jdbc.exceptions.MySQLIntegrityConstraintViolationException: Duplicate entry '1' for key 'PRIMARY'
- at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:931)
- at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2870)
- at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1573)
- at com.mysql.jdbc.ServerPreparedStatement.serverExecute(ServerPreparedStatement.java:1169)
- at com.mysql.jdbc.ServerPreparedStatement.executeInternal(ServerPreparedStatement.java:693)
- at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:1404)
- at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:1318)
- at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:1303)
- at com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.executeUpdate(NewProxyPreparedStatement.java:105)
- at prx.dao.core.AbstractPrxDao.executeUpdate(AbstractPrxDao.java:215)
- at prx.dao.Test.main(Test.java:21)
- 2011/08/12 10:32:47 [ERROR] [事务失败,回滚]
- 2011/08/12 10:32:47 [INFO] select * from t_attention
- [attention_id:1, user_id:1, blog_id:1]
- [attention_id:2, user_id:2, blog_id:2]
- [attention_id:2, user_id:2, blog_id:2]
- [attention_id:3, user_id:3, blog_id:3]
- [attention_id:4, user_id:4, blog_id:4]
- [attention_id:5, user_id:5, blog_id:5]
- [attention_id:6, user_id:6, blog_id:6]
- [attention_id:7, user_id:7, blog_id:7]
- [attention_id:8, user_id:8, blog_id:8]
- [attention_id:9, user_id:9, blog_id:9]
- [attention_id:10, user_id:10, blog_id:10]
- [attention_id:11, user_id:11, blog_id:11]
- [attention_id:12, user_id:12, blog_id:12]
- [attention_id:13, user_id:13, blog_id:13]
- [attention_id:14, user_id:14, blog_id:14]
- [attention_id:15, user_id:15, blog_id:15]
- [attention_id:16, user_id:16, blog_id:16]
- [attention_id:17, user_id:17, blog_id:17]
- [attention_id:18, user_id:18, blog_id:18]
- [attention_id:19, user_id:19, blog_id:19]
执行错误, 事务回滚失败
5. 验证水平分片的表的事务(无回滚)
- public static void main(String[] args) throws Exception {
- IPrxDao dao = new MySqlDao();
-
-
- dao.startTransaction();
- for(int i=10; i<20; i++) {
- dao.executeUpdate("insert into t_user(user_id, user_name, user_address) values(?, ?, ?)", new Object[]{i, "n"+i, "a"+i});
- }
-
-
- dao.commitTransaction();
-
-
-
- List
-
- for(Map map : list) {
- System.out.println(StringUtil.valueOfMap(map));
- }
- }
执行结果:
- 2011/08/12 10:41:20 [INFO] MLog clients using log4j logging.
- 2011/08/12 10:41:23 [INFO] Initializing c3p0-0.9.1.2 [built 21-May-2007 15:04:56; debug? true; trace: 10]
- 2011/08/12 10:41:24 [INFO] Initializing c3p0 pool... com.mchange.v2.c3p0.ComboPooledDataSource [ acquireIncrement -> 3, acquireRetryAttempts -> 30, acquireRetryDelay -> 1000, autoCommitOnClose -> false, automaticTestTable -> null, breakAfterAcquireFailure -> false, checkoutTimeout -> 0, connectionCustomizerClassName -> null, connectionTesterClassName -> com.mchange.v2.c3p0.impl.DefaultConnectionTester, dataSourceName -> 1hge3oc8h1g4j7pb1170bmp|929206, debugUnreturnedConnectionStackTraces -> false, description -> null, driverClass -> com.mysql.jdbc.Driver, factoryClassLocation -> null, forceIgnoreUnresolvedTransactions -> false, identityToken -> 1hge3oc8h1g4j7pb1170bmp|929206, idleConnectionTestPeriod -> 0, initialPoolSize -> 3, jdbcUrl -> jdbc:mysql://192.168.14.129:8066/test?autoReconnect=true&characterEncoding=UTF-8, maxAdministrativeTaskTime -> 0, maxConnectionAge -> 0, maxIdleTime -> 0, maxIdleTimeExcessConnections -> 0, maxPoolSize -> 15, maxStatements -> 0, maxStatementsPerConnection -> 0, minPoolSize -> 3, numHelperThreads -> 3, numThreadsAwaitingCheckoutDefaultUser -> 0, preferredTestQuery -> null, properties -> {user=******, password=******}, propertyCycle -> 0, testConnectionOnCheckin -> false, testConnectionOnCheckout -> false, unreturnedConnectionTimeout -> 0, usesTraditionalReflectiveProxies -> false ]
- 2011/08/12 10:41:27 [INFO] [开始事务]
- 2011/08/12 10:41:27 [INFO] insert into t_user(user_id, user_name, user_address) values(?, ?, ?)
- 2011/08/12 10:41:27 [INFO] values:[10,n10,a10]
- 2011/08/12 10:41:27 [INFO] insert into t_user(user_id, user_name, user_address) values(?, ?, ?)
- 2011/08/12 10:41:27 [INFO] values:[11,n11,a11]
- 2011/08/12 10:41:27 [INFO] insert into t_user(user_id, user_name, user_address) values(?, ?, ?)
- 2011/08/12 10:41:27 [INFO] values:[12,n12,a12]
- 2011/08/12 10:41:27 [INFO] insert into t_user(user_id, user_name, user_address) values(?, ?, ?)
- 2011/08/12 10:41:27 [INFO] values:[13,n13,a13]
- 2011/08/12 10:41:27 [INFO] insert into t_user(user_id, user_name, user_address) values(?, ?, ?)
- 2011/08/12 10:41:27 [INFO] values:[14,n14,a14]
- 2011/08/12 10:41:27 [INFO] insert into t_user(user_id, user_name, user_address) values(?, ?, ?)
- 2011/08/12 10:41:27 [INFO] values:[15,n15,a15]
- 2011/08/12 10:41:28 [INFO] insert into t_user(user_id, user_name, user_address) values(?, ?, ?)
- 2011/08/12 10:41:28 [INFO] values:[16,n16,a16]
- 2011/08/12 10:41:28 [INFO] insert into t_user(user_id, user_name, user_address) values(?, ?, ?)
- 2011/08/12 10:41:28 [INFO] values:[17,n17,a17]
- 2011/08/12 10:41:28 [INFO] insert into t_user(user_id, user_name, user_address) values(?, ?, ?)
- 2011/08/12 10:41:28 [INFO] values:[18,n18,a18]
- 2011/08/12 10:41:28 [INFO] insert into t_user(user_id, user_name, user_address) values(?, ?, ?)
- 2011/08/12 10:41:28 [INFO] values:[19,n19,a19]
- 2011/08/12 10:41:28 [INFO] [事务提交]
- 2011/08/12 10:41:28 [INFO] select * from t_user
- [user_id:2, user_name:n2, user_address:a2]
- [user_id:4, user_name:n4, user_address:a4]
- [user_id:6, user_name:n6, user_address:a6]
- [user_id:10, user_name:n10, user_address:a10]
- [user_id:12, user_name:n12, user_address:a12]
- [user_id:14, user_name:n14, user_address:a14]
- [user_id:16, user_name:n16, user_address:a16]
- [user_id:18, user_name:n18, user_address:a18]
- [user_id:1, user_name:n1, user_address:a1]
- [user_id:3, user_name:n3, user_address:a3]
- [user_id:5, user_name:n5, user_address:a5]
- [user_id:11, user_name:n11, user_address:a11]
- [user_id:13, user_name:n13, user_address:a13]
- [user_id:15, user_name:n15, user_address:a15]
- [user_id:17, user_name:n17, user_address:a17]
- [user_id:19, user_name:n19, user_address:a19]
执行成功。
6. 验证水平分片的表的事务(有回滚)
- public static void main(String[] args) throws Exception {
- IPrxDao dao = new MySqlDao();
-
-
- dao.startTransaction();
- for(int i=20; i<30; i++) {
- dao.executeUpdate("insert into t_user(user_id, user_name, user_address) values(?, ?, ?)", new Object[]{i, "n"+i, "a"+i});
- }
-
- dao.executeUpdate("insert into t_user(user_id) values(?)", new Object[]{1});
- dao.commitTransaction();
-
-
-
- List
-
- for(Map map : list) {
- System.out.println(StringUtil.valueOfMap(map));
- }
- }
- 2011/08/12 10:44:05 [INFO] MLog clients using log4j logging.
- 2011/08/12 10:44:05 [INFO] Initializing c3p0-0.9.1.2 [built 21-May-2007 15:04:56; debug? true; trace: 10]
- 2011/08/12 10:44:05 [INFO] Initializing c3p0 pool... com.mchange.v2.c3p0.ComboPooledDataSource [ acquireIncrement -> 3, acquireRetryAttempts -> 30, acquireRetryDelay -> 1000, autoCommitOnClose -> false, automaticTestTable -> null, breakAfterAcquireFailure -> false, checkoutTimeout -> 0, connectionCustomizerClassName -> null, connectionTesterClassName -> com.mchange.v2.c3p0.impl.DefaultConnectionTester, dataSourceName -> 1hge3oc8h1g4mqbxeevnxo|b169f8, debugUnreturnedConnectionStackTraces -> false, description -> null, driverClass -> com.mysql.jdbc.Driver, factoryClassLocation -> null, forceIgnoreUnresolvedTransactions -> false, identityToken -> 1hge3oc8h1g4mqbxeevnxo|b169f8, idleConnectionTestPeriod -> 0, initialPoolSize -> 3, jdbcUrl -> jdbc:mysql://192.168.14.129:8066/test?autoReconnect=true&characterEncoding=UTF-8, maxAdministrativeTaskTime -> 0, maxConnectionAge -> 0, maxIdleTime -> 0, maxIdleTimeExcessConnections -> 0, maxPoolSize -> 15, maxStatements -> 0, maxStatementsPerConnection -> 0, minPoolSize -> 3, numHelperThreads -> 3, numThreadsAwaitingCheckoutDefaultUser -> 0, preferredTestQuery -> null, properties -> {user=******, password=******}, propertyCycle -> 0, testConnectionOnCheckin -> false, testConnectionOnCheckout -> false, unreturnedConnectionTimeout -> 0, usesTraditionalReflectiveProxies -> false ]
- 2011/08/12 10:44:05 [INFO] [开始事务]
- 2011/08/12 10:44:05 [INFO] insert into t_user(user_id, user_name, user_address) values(?, ?, ?)
- 2011/08/12 10:44:05 [INFO] values:[20,n20,a20]
- 2011/08/12 10:44:06 [INFO] insert into t_user(user_id, user_name, user_address) values(?, ?, ?)
- 2011/08/12 10:44:06 [INFO] values:[21,n21,a21]
- 2011/08/12 10:44:06 [INFO] insert into t_user(user_id, user_name, user_address) values(?, ?, ?)
- 2011/08/12 10:44:06 [INFO] values:[22,n22,a22]
- 2011/08/12 10:44:06 [INFO] insert into t_user(user_id, user_name, user_address) values(?, ?, ?)
- 2011/08/12 10:44:06 [INFO] values:[23,n23,a23]
- 2011/08/12 10:44:06 [INFO] insert into t_user(user_id, user_name, user_address) values(?, ?, ?)
- 2011/08/12 10:44:06 [INFO] values:[24,n24,a24]
- 2011/08/12 10:44:06 [INFO] insert into t_user(user_id, user_name, user_address) values(?, ?, ?)
- 2011/08/12 10:44:06 [INFO] values:[25,n25,a25]
- 2011/08/12 10:44:06 [INFO] insert into t_user(user_id, user_name, user_address) values(?, ?, ?)
- 2011/08/12 10:44:06 [INFO] values:[26,n26,a26]
- 2011/08/12 10:44:06 [INFO] insert into t_user(user_id, user_name, user_address) values(?, ?, ?)
- 2011/08/12 10:44:06 [INFO] values:[27,n27,a27]
- 2011/08/12 10:44:06 [INFO] insert into t_user(user_id, user_name, user_address) values(?, ?, ?)
- 2011/08/12 10:44:06 [INFO] values:[28,n28,a28]
- 2011/08/12 10:44:06 [INFO] insert into t_user(user_id, user_name, user_address) values(?, ?, ?)
- 2011/08/12 10:44:06 [INFO] values:[29,n29,a29]
- 2011/08/12 10:44:06 [INFO] insert into t_user(user_id) values(?)
- 2011/08/12 10:44:06 [INFO] values:[1]
- 2011/08/12 10:44:06 [ERROR] Duplicate entry '1' for key 'PRIMARY'
- com.mysql.jdbc.exceptions.MySQLIntegrityConstraintViolationException: Duplicate entry '1' for key 'PRIMARY'
- at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:931)
- at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2870)
- at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1573)
- at com.mysql.jdbc.ServerPreparedStatement.serverExecute(ServerPreparedStatement.java:1169)
- at com.mysql.jdbc.ServerPreparedStatement.executeInternal(ServerPreparedStatement.java:693)
- at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:1404)
- at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:1318)
- at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:1303)
- at com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.executeUpdate(NewProxyPreparedStatement.java:105)
- at prx.dao.core.AbstractPrxDao.executeUpdate(AbstractPrxDao.java:215)
- at prx.dao.Test.main(Test.java:21)
- 2011/08/12 10:44:06 [ERROR] [事务失败,回滚]
- 2011/08/12 10:44:06 [INFO] select * from t_user
- [user_id:1, user_name:n1, user_address:a1]
- [user_id:3, user_name:n3, user_address:a3]
- [user_id:5, user_name:n5, user_address:a5]
- [user_id:11, user_name:n11, user_address:a11]
- [user_id:13, user_name:n13, user_address:a13]
- [user_id:15, user_name:n15, user_address:a15]
- [user_id:17, user_name:n17, user_address:a17]
- [user_id:19, user_name:n19, user_address:a19]
- [user_id:21, user_name:n21, user_address:a21]
- [user_id:23, user_name:n23, user_address:a23]
- [user_id:25, user_name:n25, user_address:a25]
- [user_id:27, user_name:n27, user_address:a27]
- [user_id:29, user_name:n29, user_address:a29]
- [user_id:2, user_name:n2, user_address:a2]
- [user_id:4, user_name:n4, user_address:a4]
- [user_id:6, user_name:n6, user_address:a6]
- [user_id:10, user_name:n10, user_address:a10]
- [user_id:12, user_name:n12, user_address:a12]
- [user_id:14, user_name:n14, user_address:a14]
- [user_id:16, user_name:n16, user_address:a16]
- [user_id:18, user_name:n18, user_address:a18]
结果:
user_id 为偶数的部分都没有插入数据,回滚成功。 user_id 为偶数 分片到 server1 为主数据库
user_id 为奇数的部分都已经插入数据,回滚失败。 user_id 为奇数 分片到 server2
综上: 所有分片的表,都不能支持事务。
验证存储过程
这个就不写验证过程了。 直接写结果好了。
结果:
1. 只可以调用 server1 主数据库 的 procedure , 不能调用 server2 的。
2. server1 的 procedure 只能操作 server1 中的表, 不支持水平和垂直分片。水平切分的 t_user, 不管 user_id 奇偶 均插入到 server1。垂直切分的t_attention 表不能访问。